Sccessful Trial Run for Waste PE Plastic Lumber Production Line

Successful Trial Run Validates Direct Extrusion Solution for Waste PE Plastic Lumber Production Line

Background & Core Testing Objectives

In response to the technical verification requirements of our Canadian client, our team recently completed a targeted on-site trial run for recycled plastic lumber extrusion. The test aimed to validate the feasibility of direct extrusion using raw waste PE flakes without pelletization, while collecting real-time processing data to optimize the die structure and cooling & sizing system for thick solid plastic planks.

Trial Run Setup & Technical Parameters

During the trial, our customized high-efficiency vented extruder was deployed to process unpelletized waste PE flakes, producing solid plastic lumber planks with a finished dimension of 200mm × 50mm. This test focused on two core technical objectives: confirming whether waste PE fragments can be directly utilized in extrusion production to eliminate the traditional pelletizing process and reduce production costs, and analyzing the extrusion forming characteristics of thick-profile plastic lumber to iterate a more scientific sizing and cooling solution.

Outstanding Plasticization Performance & Technical Verification Results

The trial delivered encouraging and authoritative technical results. Our independently developed vented high-efficiency extruder, specially optimized for waste plastic materials, achieved excellent plasticization performance throughout the operation. The finished plastic lumber samples presented a fine, dense and solid cutting surface with zero internal bubbles, fully verifying the equipment’s outstanding capability in melting, homogenizing and exhausting impure gas from waste PE raw materials. This proves that raw waste PE flakes can be directly used for high-quality solid plastic lumber production without pre-pelletization, greatly simplifying the production process, lowering energy consumption and improving production efficiency for recycled plastic processing.

Technical Challenge Identification & Targeted Optimization Plan

Meanwhile, the trial also identified a key optimization point for thick-profile production. Due to the 50mm extra-thick cross-section of the plastic lumber, internal heat accumulates during continuous extrusion and cannot be dissipated in a timely manner, resulting in partial surface bulging of the finished products. This phenomenon is a typical technical challenge for thick solid plastic profile extrusion rather than equipment performance defects. Based on the data collected from this trial, our engineering team will carry out targeted optimization, including die orifice structure adjustment, graded circulating cooling system design and heat dissipation path upgrading, to completely solve the heat accumulation and bulging problem and ensure stable forming and consistent flatness of thick plastic lumber products.

Technical Breakthrough & Future Development Prospect